Forum Discussion

BStui2's avatar
BStui2
Icon for New Contributor rankNew Contributor
5 years ago

How to time constrain an combinational loop on FPGA?

Hi, I am trying to time constrain a combinational loop. I need a free running oscillator which I can coarsly tune and enable. Unfortunately commands like: set_net_delay set_min_delay set_max_de...
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

Could you share a simple test case for error replication?

Thanks.

Best regards,

KhaiY

BStui2's avatar
BStui2
Icon for New Contributor rankNew Contributor
5 years ago

Hi, there were some hollidays here so I couldn't reply sooner.

I have attached a minimal test case which shows a net delay is applied for enable_i to nand_ro~1, but is not applied to the loopback nand-ro~1 to nand_ro~1.

I sure hope this helps!